js代码

<script type="text/javascript" src="js/jquery-1.11.0.min.js"></script>
<script type="text/javascript" src="js/jquery.input-counter.min.js"></script>
<script type="text/javascript">
var options = {
selectors: {
	addButtonSelector: '.btn-add',
	subtractButtonSelector: '.btn-subtract',
	inputSelector: '.counter',
},
settings: {
	checkValue: true,
	isReadOnly: true,
},
};

$(".input-counter").inputCounter(options);
</script>